Mangrove ecosystems play a critical role in the global carbon cycle by sequestering carbon dioxide and modulating methane (CH₄) emissions, yet methane dynamics in these systems remain poorly understood. This study will quantify methane fluxes along a salinity gradient in the Florida Everglades, focusing on how tidal inundation influences CH₄ cycling. Data collection in summer 2025 will integrate field-based greenhouse gas sampling with existing eddy covariance measurements at the SRS6 Long-Term Ecological Research site. Findings will clarify the role of salinity in regulating methane fluxes in mangrove ecosystems and inform climate mitigation strategies, while supporting completion of a master’s thesis at the Yale School of the Environment.